Photovoltaic panel cleaning device

Abstract

The invention discloses a photovoltaic panel cleaning device, which belongs to the technical field of photovoltaic panel cleaning, and comprises: a mounting seat, a base frame and a scraper, wherein the scraper is mounted inside the base frame, a suction port and a water spray port are provided on the scraper, and the water spray port is communicated with a nozzle mounted on the scraper, and a discharge end of the nozzle is located at one side of the forward direction of the scraper; a driving part, wherein the driving part is mounted on the mounting seat, and the driving part can drive the scraper forward or backward; a scraper bar, wherein the scraper bar is mounted on the base frame, and the scraper bar is located at one side of the backward direction of the scraper; wherein, when the scraper moves forward, the nozzle and the suction port start to work, and at the same time the scraper is pressed against the photovoltaic panel to perform flushing, scraping and suction operations; when the scraper is retreated, the scraper bar descends and presses against the photovoltaic panel to remove residual water stains. The invention can recycle sewage generated during the cleaning process to avoid sewage splashing and affecting the cleaning effect. In addition, the water stains can be scraped off again after cleaning to avoid the water stains affecting the power generation efficiency.

Description

Technical Field

[0001] The invention relates to a photovoltaic panel cleaning device, belonging to the technical field of photovoltaic panel cleaning. Background Art

[0002] At present, in order to facilitate the cleaning of the surface of photovoltaic panels and prevent dust or stains from covering the surface of photovoltaic panels and affecting the power generation efficiency of photovoltaic panels, a variety of devices for cleaning photovoltaic panels have appeared on the market. However, most of the existing cleaning equipment does not recycle the sewage generated during the cleaning process, which will cause sewage splashing and easily affect the cleaning effect. In addition, there are often water stains remaining on the surface of the photovoltaic panels after cleaning. These water stains will affect the power generation efficiency of the photovoltaic panels. In order to solve the above problems, the present invention provides a photovoltaic panel cleaning device. Summary of the invention

[0003] In view of the problems existing in the above-mentioned prior art, the present invention provides a photovoltaic panel cleaning device, which can recycle the sewage generated during the cleaning process to avoid sewage splashing and affecting the cleaning effect. In addition, after cleaning, the water stains can be scraped off again to avoid the water stains affecting the power generation efficiency.

[0004] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solution: a photovoltaic panel cleaning device, comprising:

[0005] A mounting seat, wherein the mounting seat is mounted on a photovoltaic panel support;

[0006] A base frame, wherein the base frame is mounted on the mounting seat, and both ends of the opening of the lower side of the base frame are in contact with the photovoltaic panel, and a space for dirt is left between the two sides of the opening of the lower side of the base frame and the photovoltaic panel;

[0007] A scraper, the scraper is installed inside the base frame, and the scraping edge of the scraper is located at the lower side, the scraper is provided with a suction port and a water spray port, and the water spray port is communicated with a nozzle installed on the scraper, and the discharge end of the nozzle is located on one side of the forward direction of the scraper;

[0008] A driving unit, which is mounted on the mounting seat and can drive the scraper forward or backward;

[0009] A scraper strip, the scraper strip is mounted on the base frame and is located on one side of the scraper blade's backward direction;

[0010] When the scraper moves forward, the nozzle and the suction port start to work, and the scraper presses against the photovoltaic panel to perform flushing, scraping and suction.

[0011] When the scraper moves backward, the scraper bar descends and presses against the photovoltaic panel to remove residual water stains.

[0012] Preferably, the angle between the discharge end of the nozzle and the scraper is an obtuse angle, and the angle between the lower side of the scraper and the photovoltaic panel is an acute angle.

[0013] Preferably, the scraper is fixedly connected to a water inlet frame and a suction frame, both ends of the upper side of the base frame are fixedly connected to fixed frames, and a slide plate is slidably installed inside the fixed frame, and the slide plate is fixedly connected to the water inlet frame and the suction frame. When the water inlet frame is working, the slide plate slides toward the direction of the base frame to make the scraper press against the photovoltaic panel.

[0014] Preferably, pistons are slidably mounted at both ends of the water inlet frame, and an air chamber is formed between the piston and the inner side wall of the end of the water inlet frame;

[0015] An air bag is installed on the upper side of the slide plate, and the air bag is communicated with the air chamber inside the water inlet frame;

[0016] When the water inlet frame is working, the water pressure inside the water inlet frame will slide the piston toward the inner walls at both ends of the water inlet frame, squeezing the air in the air chamber into the air bag. At this time, the air bag expands, causing the scraper to press against the photovoltaic panel.

[0017] Preferably, the outer side surface of the piston is stepped, and the thickness of the upper end of the piston is smaller than the thickness of the lower end.

[0018] Preferably, a first spring is connected between the slide plate and the base frame, and the first spring has an elastic force that pushes the slide plate in a direction away from the base frame.

[0019] Preferably, a mounting plate is fixedly connected to the scraper strip, the upper end surface of the mounting plate is an inclined surface, and the upper end of the mounting plate passes through the base frame and extends to the inside of the base frame, an extrusion groove adapted to the mounting plate is provided on the scraper plate, and a second spring is connected between the mounting plate and the base frame, and the second spring has a pressing force that makes the mounting plate press against the bottom side wall of the extrusion groove;

[0020] The groove bottom side wall of the extrusion groove is divided into a yielding section and an extrusion section. When the mounting plate is pressed against the yielding section, the scraper strip is separated from the photovoltaic panel. When the mounting plate is pressed against the extrusion section, the scraper strip is pressed against the photovoltaic panel.

[0021] Preferably, the mounting base comprises two mutually symmetrical mounting frames, and the mounting frames are connected to the photovoltaic bracket via angle irons fixedly mounted thereon.

[0022] Preferably, the driving part includes two connecting frames, the upper ends of the connecting frames are interconnected with the base frame, the lower ends extend to the interior of the corresponding installation frame, and are threadedly connected to a lead screw rotatably connected to the interior of the installation frame, and the lead screw is driven by a motor installed on the installation frame.

[0023] Preferably, the upper end of the connecting frame is rotatably connected to a stepped shaft fixedly mounted on the base frame, and a torsion spring is provided between the connecting frame and the stepped shaft, and the base frame is tightly fitted to the photovoltaic panel under the torsion force of the torsion spring.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. Through the setting of the scraper and the nozzle, it is achieved that when the scraper moves forward, the nozzle will first spray high-pressure water to wash the surface of the photovoltaic panel, and then the scraper will scrape off the stains on the photovoltaic panel. At the same time, the high-pressure water sprayed by the nozzle will first wash the stains, so that the cleaning effect of the scraper is better.

[0026] 2. By setting the suction port, the sewage and scraped stains can be sucked away, thereby avoiding the splashing of sewage and stains and affecting the cleaning effect.

[0027] 3. By setting the scraper strip, the surface of the photovoltaic panel can be cleaned again when the scraper retreats and resets, further improving the cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the structure of the present invention.

[0029] Figure 2 It is an exploded view of the stepped shaft, mounting bracket and mounting frame of the present invention.

[0030] Figure 3 For the present invention Figure 2 Enlarged view of point C.

[0031] Figure 4 It is a cross-sectional view of the base frame of the present invention.

[0032] Figure 5 For the present invention Figure 4 Enlarged view of point D.

[0033] Figure 6 It is a cross-sectional view of the water inlet frame of the present invention.

[0034] Figure 7 It is a schematic diagram of the connection of the scraper, the water inlet frame and the suction frame of the present invention.

[0035] Figure 8 It is a schematic diagram of the connection between the motor and the mounting frame of the present invention.

[0036] In the figure: 1, mounting seat, 101, mounting frame, 102, angle iron, 2, base frame, 3, scraper, 4, suction port, 5, water spray port, 6, nozzle, 7, scraper bar, 8, water inlet frame, 9, suction frame, 10, fixed frame, 11, slide plate, 12, piston, 13, air bag, 14, first spring, 15, mounting plate, 16, second spring, 17, extrusion groove, 18, connecting frame, 19, stepped shaft, 20, lead screw, 21, motor, 22, torsion spring. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] The present invention provides a photovoltaic panel cleaning device, such as Figures 1 to 8 shown.

[0039] Embodiment 1:

[0040] A photovoltaic panel cleaning device includes a mounting base 1, on which a base frame 2 is mounted, and on which a driving unit is mounted to drive the base frame 2 to move forward or backward. The mounting base 1 includes two mutually symmetrical mounting frames 101, and the two mounting frames 101 are symmetrical to each other with the center line of the corresponding photovoltaic panel as a reference. The mounting frame 101 is mounted on a photovoltaic panel bracket via an angle iron 102 fixed thereon, and the angle iron 102 is connected to the photovoltaic panel bracket via bolts.

[0041] The driving part includes two lead screws 20, which are rotatably connected inside two mounting frames 101 respectively, and the two lead screws 20 are respectively connected to the motor shafts of the corresponding motors 21. The motor 21 is installed on the corresponding mounting frame 101, and the rotation of the motor shaft of the motor 21 can drive the corresponding lead screw 20 to rotate.

[0042] A connecting frame 18 is slidably installed inside the installation frame 101, and the connecting frame 18 is threadedly connected to the corresponding lead screw 20. The upper end of the connecting frame 18 is rotatably connected to a stepped shaft 19 fixedly installed on the base frame 2. The stepped shaft 19 penetrates the connecting frame 18 and extends into a cavity opened inside the connecting frame 18 and folds around to form a convex circle, and a torsion spring 22 is connected between the convex circle and the side wall of the cavity. One end of the torsion spring 22 is fixedly connected to the convex circle, and the other end is fixedly connected to the side wall of the cavity. Under the torsion force of the torsion spring 22, the lower end opening of the base frame 2 fits tightly against the photovoltaic panel, and space is left between the two sides of the opening on the lower side of the base frame 2 and the photovoltaic panel to make room for stains, which can prevent the base frame 2 from pushing the stains to move on the photovoltaic panel and affecting the cleaning effect.

[0043] A scraper 3 is slidably installed inside the base frame 2, and the scraping edge of the scraper 3 is located on the lower side, and a suction port 4 and a water spray port 5 are opened on the scraper 3. The suction port 4 is communicated with the external negative pressure suction device through the suction frame 9, and the water spray port 5 is communicated with the external pressure pump through the water inlet frame 8. A nozzle 6 is also fixedly installed on the scraper 3, and the discharge end of the nozzle 6 is located on one side of the forward direction of the scraper 3. When the scraper 3 moves forward, the scraper 3 is pressed against the photovoltaic panel, and the nozzle 6 and the suction port 4 work at the same time. The stains on the photovoltaic panel will be impacted by the water flow first, and then scraped off by the scraper 3. The angle between the discharge end of the nozzle 6 and the scraper 3 is an obtuse angle, and the angle between the lower side of the scraper 3 and the photovoltaic panel is an acute angle (such as Figure 4 The angle B shown is an obtuse angle, and the angle A is an acute angle). The setting of the acute angle can enable the scraper 3 to better scrape the stains on the photovoltaic panel, while the setting of the obtuse angle can enable the nozzle 6 to impact the stains and the scraper 3 to scrape the stains respectively from two angles, thereby improving the cleaning effect. The water sprayed by the nozzle 6 and the stains scraped by the scraper 3 will be directly sucked away and recovered by the suction port 4, thereby avoiding the splashing of sewage and scraped stains, which affects the cleaning effect.

[0044] A scraper strip 7 is also installed on the base frame 2. The scraper strip 7 is located on one side of the scraper 3 in the backward direction. When the scraper 3 moves forward, the scraper strip 7 does not contact the photovoltaic panel. When the scraper 3 moves backward and resets, the scraper strip 7 presses against the photovoltaic panel to clean the water stains on the photovoltaic panel.

[0045] Embodiment 2:

[0046] Further, on the basis of the first embodiment, in order to prevent the scraper 3 from damaging the photovoltaic panel when scraping off the stains, the following method can be adopted to make the scraper 3 close to the photovoltaic panel, specifically, as follows:

[0047] Both ends of the upper side surface of the base frame 2 are fixedly connected with a fixed frame 10, and a slide plate 11 is slidably installed inside the fixed frame 10, and the slide plate 11 is fixedly connected to the water inlet frame 8 and the suction frame 9, and pistons 12 are slidably installed at both ends of the water inlet frame 8. An air chamber is formed between the piston 12 and the inner side wall of the end corresponding to the water inlet frame 8, and both ends of the upper side surface of the slide plate 11 are fixedly connected with air bags 13, and the air bags 13 are communicated with the corresponding air chamber. When the water inlet frame 8 is working, the water pressure inside the water inlet frame 8 increases, so that the piston 12 can slide in a direction away from the center of the water inlet frame 8, and then the air inside the air chamber can be squeezed into the air bag 13. At this time, the air bag 13 will expand and squeeze the slide plate 11 downward, so that the scraper 3 can be pressed against the photovoltaic panel. Using air pressure to make the scraper 3 press against the photovoltaic panel can avoid damage to the photovoltaic panel due to excessive pressing force.

[0048] The outer side surface of the piston 12 is stepped, and the thickness of the upper end of the piston 12 is less than that of the lower end, that is, when the lower end of the outer side surface of the piston 12 and the inner side walls of the two ends of the water inlet frame 8 are pressed against each other, a certain gap is still retained between the upper end of the outer side surface of the piston 12 and the inner side walls of the two ends of the water inlet frame 8, so that the gas inside the air chamber can be smoothly squeezed into the interior of the air bag 13.

[0049] A first spring 14 is connected between the lower side of the skateboard 11 and the base frame 2. One end of the first spring 14 is fixedly connected to the skateboard 11, and the other end is fixedly connected to the base frame 2. The first spring 14 has an elastic force that pushes the skateboard 11 away from the base frame 2, so that the scraper 3 can be smoothly moved away from the photovoltaic panel when the water inlet frame 8 is not working.

[0050] Embodiment three:

[0051] On the basis of the second embodiment, in order to prevent the scraper strip 7 from contacting the photovoltaic panel when the scraper 3 moves forward and to be able to press against the photovoltaic panel when the scraper 3 moves backward, a mounting plate 15 is fixedly connected to the scraper strip 7, the upper end face of the mounting plate 15 is an inclined surface, and the height of the mounting plate 15 on one side close to the forward direction of the scraper 3 is lower than the height of the other side, the upper end of the mounting plate 15 passes through the base frame 2 and extends to the inside of the base frame 2, the scraper 3 is provided with an extrusion groove 17 adapted to the upper end face of the mounting plate 15, and second springs 16 are respectively connected between the two ends of the mounting plate 15 and the base frame 2, one end of the second spring 16 is fixedly connected to the mounting plate 15, and the other end is fixedly connected to the base frame 2, and the second spring 16 has a pressing force that presses the mounting plate 15 against the bottom side wall of the extrusion groove 17.

[0052] The side wall of the bottom of the extrusion groove 17 is divided into a yielding section and an extrusion section. When the scraper 3 is pressed against the photovoltaic panel, the mounting plate 15 is pressed against the yielding section of the extrusion groove 17. At this time, the scraper strip 7 is not in contact with the photovoltaic panel.

[0053] When the scraper 3 is not in contact with the photovoltaic panel, the mounting plate 15 is pressed against the extrusion section of the extrusion groove 17 , and at this time, the scraper strip 7 is pressed against the photovoltaic panel.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate rather than limit the technical solutions of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that the present invention can still be modified or replaced by equivalents. Any modification or partial replacement that does not depart from the spirit and scope of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A photovoltaic panel cleaning device, characterized in that: include: A mounting seat (1), the mounting seat (1) being mounted on a photovoltaic panel support; A base frame (2), the base frame (2) being mounted on the mounting seat (1), and the two ends of the lower side opening of the base frame (2) being in contact with the photovoltaic panel, and a space for dirt to be left between the two sides of the lower side opening of the base frame (2) and the photovoltaic panel; A scraper (3), the scraper (3) being mounted inside the base frame (2), with the scraping blade of the scraper (3) being located at the lower side, the scraper (3) being provided with a suction port (4) and a water spray port (5), the water spray port (5) being communicated with a spray head (6) mounted on the scraper (3), and the discharge end of the spray head (6) being located at one side of the forward direction of the scraper (3); A driving unit, the driving unit is mounted on the mounting seat (1), and the driving unit is capable of driving the scraper (3) forward or backward; A scraper strip (7), the scraper strip (7) being mounted on the base frame (2), and the scraper strip (7) being located on one side of the scraper plate (3) in a backward direction; The scraper (3) is fixedly connected to a water inlet frame (8) and a suction frame (9); both ends of the upper side surface of the base frame (2) are fixedly connected to fixed frames (10); and a slide plate (11) is slidably mounted inside the fixed frame (10); the slide plate (11) is fixedly connected to the water inlet frame (8) and the suction frame (9); when the water inlet frame (8) is working, the slide plate (11) slides in the direction of the base frame (2), so that the scraper (3) is pressed against the photovoltaic panel; Pistons (12) are slidably mounted at both ends of the water inlet frame (8), and an air chamber is formed between the piston (12) and the inner side wall of the end of the water inlet frame (8); An air bag (13) is installed on the upper side of the slide plate (11), and the air bag (13) is communicated with the air chamber inside the water inlet frame (8).

2. A photovoltaic panel cleaning device according to claim 1, characterized in that: The angle between the discharge end of the nozzle (6) and the scraper (3) is an obtuse angle, and the angle between the lower side of the scraper (3) and the photovoltaic panel is an acute angle.

3. A photovoltaic panel cleaning device according to claim 1, characterized in that: A first spring (14) is connected between the slide plate (11) and the base frame (2), and the first spring (14) has an elastic force that pushes the slide plate (11) in a direction away from the base frame (2).

4. A photovoltaic panel cleaning device according to claim 1, characterized in that: The scraper strip (7) is fixedly connected to a mounting plate (15), the upper end surface of the mounting plate (15) is an inclined surface, and the upper end of the mounting plate (15) passes through the base frame (2) and extends to the inside of the base frame (2), the scraper plate (3) is provided with an extrusion groove (17) adapted to the mounting plate (15), and a second spring (16) is connected between the mounting plate (15) and the base frame (2), and the second spring (16) has a pressing force that causes the mounting plate (15) to press against the bottom side wall of the extrusion groove (17); The side wall of the bottom of the extrusion groove (17) is divided into a clearance section and an extrusion section. When the mounting plate (15) is pressed against the clearance section, the scraper strip (7) is separated from the photovoltaic panel. When the mounting plate (15) is pressed against the extrusion section, the scraper strip (7) is pressed against the photovoltaic panel.

5. A photovoltaic panel cleaning device according to claim 1, characterized in that: The mounting seat (1) comprises two mutually symmetrical mounting frames (101), and the mounting frames (101) are connected to the photovoltaic support via angle irons (102) fixedly mounted thereon.

6. A photovoltaic panel cleaning device according to claim 5, characterized in that: The driving unit comprises two connecting frames (18), the upper ends of the connecting frames (18) being mutually connected to the base frame (2), the lower ends of the connecting frames (18) extending into the interior of the corresponding mounting frame (101), and being threadedly connected to a lead screw (20) rotatably connected to the interior of the mounting frame (101), and the lead screw (20) being driven by a motor (21) mounted on the mounting frame (101).

7. A photovoltaic panel cleaning device according to claim 6, characterized in that: The upper end of the connecting frame (18) is rotatably connected to a stepped shaft (19) fixedly mounted on the base frame (2), and a torsion spring (22) is provided between the connecting frame (18) and the stepped shaft (19), and under the torsion of the torsion spring (22), the base frame (2) is tightly fitted to the photovoltaic panel.

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